I just finished upgrading Vista to win7 RC1 on my work laptop. Everything went smoothly right up until I got to work this morning and tried to use VMWare Workstation, which booted up without issue, but the network wasn’t working.
“The network bridge on device VMnet0 is not running” and “VMNet0: Overlapped I/O operation is in progress which failed to connect” were the messages I was getting. The problem was that thewin7 upgrade failed to add the VMWare Bridge Protocol back to my network card. You could probably add this manually, but I just did a repair from my original msi and a reboot later I was up and running.